Posted by Owen Aaland on July 21, 2009 at 12:52:46 from (65.174.247.87):
In Reply to: 544 crankshaft posted by J B farms on July 21, 2009 at 12:35:58:
Without knowing more about the condition of the engine it is hard to give a good answer. We need to know why the first shaft broke. Did it do any damage to the block or rods? What is the overall condition of the engine.
If the engine has had crankshaft problems in the past it is possible that the shaft has been turned because if a bearing failure. That may have caused some damage that was unknown and the break now was a result of the previous damage. In that case you may be able to get by with simply replacing the crankshaft and bearings.
On the other end of the scale the block may be warped causing misalignment of the crankshaft bores. That would mean the block would have to line bored to be usable again.
A failed bearing may have caused the crankshaft to break and also allowed debris to contaminate the entire engine. In that case a complete disassemble and cleaning would be required to make a successful repair.
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